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Earth's heavy metals result of supernova explosion, research reveals
- simonblack 7y agoThis is all old knowledge. I'm mystified why it's suddenly 'breaking news'. Carl Sagan: 'We are all made of star stuff.' - "Cosmos, 1980" https://www.goodreads.com/quotes/144310-the-nitrogen-in-our-dna-the-calcium-in-our-teeth https://www.goodreads.com/quotes/144310-the-nitrogen-in-our-...